; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-apple-macosx | FileCheck %s

; Cmp lowering should not look past the truncate unless the high bits are known
; zero.
; rdar://12027825

define void @foo(i8 %arg4, i32 %arg5, ptr %arg14) nounwind {
; CHECK-LABEL: foo:
; CHECK:       ## %bb.0: ## %bb
; CHECK-NEXT:    ## kill: def $edi killed $edi def $rdi
; CHECK-NEXT:    andl $32, %edi
; CHECK-NEXT:    leal 13(%rdi), %eax
; CHECK-NEXT:    xorb $-14, %al
; CHECK-NEXT:    addb $82, %al
; CHECK-NEXT:    movzbl %al, %eax
; CHECK-NEXT:    testl %esi, %edi
; CHECK-NEXT:    movl $1, %ecx
; CHECK-NEXT:    cmovnel %eax, %ecx
; CHECK-NEXT:    xorb $81, %cl
; CHECK-NEXT:    movzbl %cl, %eax
; CHECK-NEXT:    addl $2062143348, %eax ## imm = 0x7AE9CF74
; CHECK-NEXT:    movl %eax, (%rdx)
; CHECK-NEXT:    retq
bb:
  %tmp48 = zext i8 %arg4 to i32
  %tmp49 = and i32 %tmp48, 32
  %tmp50 = add i32 %tmp49, 1593371643
  %tmp55 = sub i32 %tmp50, 0
  %tmp56 = add i32 %tmp55, 7787538
  %tmp57 = xor i32 %tmp56, 1601159181
  %tmp58 = xor i32 %arg5, 1601159181
  %tmp59 = and i32 %tmp57, %tmp58
  %tmp60 = add i32 %tmp59, -1263900958
  %tmp67 = sub i32 %tmp60, 0
  %tmp103 = xor i32 %tmp56, 13
  %tmp104 = trunc i32 %tmp103 to i8
  %tmp105 = sub i8 0, %tmp104
  %tmp106 = add i8 %tmp105, -103
  %tmp113 = sub i8 %tmp106, 0
  %tmp114 = add i8 %tmp113, -72
  %tmp141 = icmp ne i32 %tmp67, -1263900958
  %tmp142 = select i1 %tmp141, i8 %tmp114, i8 1
  %tmp143 = xor i8 %tmp142, 81
  %tmp144 = zext i8 %tmp143 to i32
  %tmp145 = add i32 %tmp144, 2062143348
  %tmp152 = sub i32 %tmp145, 0
  store i32 %tmp152, ptr %arg14
  ret void
}
